Water Systems

2. An impervious layer of clay, silt, or rock through which water cannot move quickly.
3. An underwater mountain.
5. An area surrounded by high land in which all water runs to a common destination (such as a river).
6. Small rivers and streams that join a larger river.
9. A change in state from a liquid to a gas (e.g., liquid water changing to water vapour).
10. A large ocean wave caused by earth movement of a volcanic eruption on the ocean floor.
13. A change in state from a gas to a liquid (e.g. water vapour changing into liquid water).
14. Water flowing along the surface of the ground.
15. The area offshore from a continent that slopes gently before the steep drop to the deep ocean floor.
19. A natural depression in the ground where water can gather.
20. An area where fresh water from rivers and salt water from the oceans mix to form moderately salty (blackish) water.
21. A steep-sided depression in the ocean floor that forms when one of the Earth's plates slides under another.

1. Water that contains a low concentration of dissolved salts.
4. The ridge of land that separates water flowing into the Pacific Ocean from those flowing north and east.
7. The movement of water as it changes state around Eart.
8. The formation of clumps from particles suspended in a fluid.
11. The process of seeping through a porous material.
12. The upper boundary of the saturated zone.
16. The carrying away of soil particles by wind, water, or glacial ice.
17. The concentration, or amount, of dissolved salts in water.
18. A relatively flat area next to a river's banks that experiences periodic flooding